Combination-lock.



Patented May I3, |902.

W. H. S. MUORE.

COMBINATION LOCK.

(Application led Jan, 28, 1901.)

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No. 699,845. Patented May I3, |902.

W. H. S. MUORE.

COMBINATION LUCK.

(Application led Jan. 28, 1901.)

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TTED STATES PATENT OFFICE.

IVILLIAM H. S. MOORE, OF WEST CHICAGO, ILLINOIS.

COMBINATION-LOCK.

SPECIFICATION forming part of Letters Patent No. 699,845, dated May 173,1902. 4

` Apfnctnon ined January 28, 1901. serial No. 45,135. (No model.)

To @ZZ whom it may concern.:

Beit known that I, WILLIAM H. S. MOORE, a citizen of the UnitedStates,residing in West Chicago, in the county of Dupage and StateofIllinois,haveinventedcertain newand useful Improvements inCombination-Locks, whereof the following is a specification.

The object of my invention is the production of a simple and inexpensiverotary-tumbler combination-lock in which special security is attained byproviding that the throwing back of the latch-bolt torelease the lockshall irregularly disarrangeY and destroy the combination, so as toprevent the reopening of the lock without the resetting of thecombination.

My invention consists, primarily, in two or more rotary tumblersactuated by external graduated dials and a pivoted pawl adapted to passentirely through the notches in the tumblers when the setting of thecombination brings those notches into registry with each other and Withthe pawl, and, further, adapted to then permit such a movement of thebolt-actuating mechanism as shall release the latch-bolt and at the sametime irregularly rotate two or more of the tumblers, so as to destroythe combination, but, nevertheless, permit the return of the said pawlto its original position. Y

In the preferable construction there is, in addition to the rotaryexternal dials, an external knob connected with and moving a slideWithin the lock, and this slide engages the latch-bolt and carries thepivoted paWl and also projections adapted to strike projections from therotary tumblers in such manner as to rotate the tumblers and destroy thecombination after the pivoted pawl has passed through the registerednotches of the tumblers. As the slide moves from its original lockedposition a cam causes the pivoted paWl, carried by the slide, to rotatethrough an arc sufficient to pass the peripheral end of the pawl throughthe tumbler-notches that have been brought into registry by the settingof the combination. Until the combination is set the pawl by contactwith the unnotched or falsely-notched periphery of the tumblers preventsthe movement of the slide. After the pawl has passed through thetumbler-notches the slide is free to engage and release the latch-boltand at the same time to strike and rotate the tumblers, as aforesaid.The slide may be returned to its original locked position either bymeans of springs or by hand movement of the external knob, according toWhether the mechanism is used as a spring-lock or as a deadlock. As theslide completes its return to the original locked position a simplespring or equivalent gravity action causes the pivoted paWl afterclearing the periphery of the tumblers to fall back into position beforethe cam above mentioned,thusrelockin`g themechanism by presenting thefree end of the pawl to the periphery of the tumblers, so as to preventthe movement of the pawl until the tumbler-notches are again brought inregistry with it by the setting of the combination.

Concentric interlocking sleeves connect thev external graduated dialsWith their respective rotary tu mblers. n A screw or lock nut within thelock secures the set of concentric sleeves and graduated dials andpermits their disconnection from the rotary tumblers for the purpose ofattaching the lock to its support and of changing the combination onwhich the lock is set. By means of set-pins and pin-holes the graduateddials and concentric sleeves are adapted to engage and hold the rotarytumblers in various radially/dierent positions corresponding to radialgraduations on the dials. Changing these positions of the tumblerschanges the combination of the lock.

' Theinvention also consists in the novel conr struction of parts anddevices and in the novel combination of parts and devices herein shownand described and more particularly pointed ont in the claims.

In the accompanying drawings, forming a part of this specification,Figure 1 is a front elevation of the lock as applied to a door or othersupport, showing the rotary graduated dials and the latch-knob. Fig. 2is a rear View of the entire lock in locked position with the protectivecase removed. Fig. 3 is the same view as Fig. 2 exceptkthat Athe notchesof the rotary tumblers are in registry with each other and with thepivoted pawl, so as to permit the latch-bolt to be thrown back. Fig. 4is the same view as in Fig. 2 without the rotary tumblers and the shaftof the bolt ICO latch and showing in transverse section the concentricsleeves that connect the rotary tumblers with the graduated dials. Fig.5 is a transverse sectional view through the line 5 5 of Fig. 2, butalso showing the protective case of the lock. Fig. 6 is a side elevationof the mechanism on the line 6 of Fig. 3. Fig. 7 is the same view asFig. 6 except that the parts are shown in the position they assume whenthe latch-bolt is completely thrown back. Fig. 8 is a side elevation ofthe mechanism along the line 8 8 of Fig. 2. Fig. 9 is an enlargementfrom Fig. 5, showing only the graduated dials and rotary tumblers andtheir connecting-sleeves, set-pins, and pin-holes. Fig. 10 is anenlarged perspective of the slide carrying the pivoted pawl.

vLike letters of reference indicate like parts in all the iigures.

A is the door or other support to which the lock is attached.

B is a stationary index-plate.

C is an outer rotary graduated dial actuating the rotary tumbler c.

D is a central rotary graduated dial actuating the rotary tumbler cl.

E is the latch-knob moving in the slot e and attached to the slide F.The slide F carries the pawl G, pivoted at g and controlled by,

the spring H. The projection h of the slide F engages the latch-bolt Iat j. The springs J J return the latch-bolt and slide to thel lockedposition when the mechanism is used as a spring-lock, but are omittedwhen the mechanism is used as a dead-lock. The latchpin K, moving in theslot 7c of the protective case L, permits the latch to be drawn back tovopen the locked door from within.

As the slide F is moved forward by the latchknob E the pivoted pawl G israised by the stationary cam M, and the movement of the slide is checkedby the free end of the pivoted pawl coming in contact with theperipheries of the rotary tumblers c and d; but when the combination isset the free end of the pawl moving in the line o o passes entirelythrough the tumbler-notches O O' and leaves the slide F free to continueits movement and draw back the latch-bolt I to release the door A. Asthe slide F so continues its movement the projection P strikes theset-pinp in the tumbler c and the projection Q strikes the set-pin q inthe tumbler d, and the respective tumblers are thus thrown in oppositedirections and the combination disarranged and destroyed. As the slide Freturns to its original position the pawl G, actuated by the spring IIor by gravity, falls back behind the cam M as soon as the free end ofthe pawl G has cleared the peripheries of the rotary tumblers.

As an alternative construction the pivoted pawl may be stationary andthe cam carried by the moving slide.

The tumblers c and d may be provided with numerous false notches :c asan additional safeguard against the sensiti'zing of the conibination.

A sleeve R extends from tumbler c through the doorA to the front of thelock, and a sleeve S from tumbler d fits within the sleeve R. A disk ris secured to the outer end of the sleeve R, and a lianged sleeve s iskeyed into the outer end of the sleeve S, so as to bev freely removabletherefrom. The disk fr is provided with a circle of pin-holes tt, intoany one of which the set-pin T of the rotary dial C may be inserted, therotation of the tumbler c being thus controlled by the rotation of thegraduated dial C. Similarly the flanged sleeve s has its flange providedwith a circle of pin-holes u u, into any one of which the set-pin U ofthe rotary dial D may be inserted, the rotation of the tumbler d beingthus controlled by the rotation of the graduated dial D. The dial D isprovided with a shaft V, passing through the sleeve S and provided atits inner end with a washer W and a lockscrew X. The removal of thescrew X permits the dials D and C to be withdrawn from the lock for thepurpose of inserting the setpins T and U into different holes of thedisk r and flanged sleeve s, so as to change the relation of thetumbler-notches to the graduated dials, and thus change the combinationon which the lock is set.

I claim l. The combination with rotary tumblers and a locking-bolt, ofmeans for disarran ging the tumblers simultaneously with the retractionof the locking-bolt from its keeper, substantially as setforth.

2. In a combination-lock, the combination of rotary tumblers, actuatedby rotary dials, a slide adapted to throw back the latch-bolt andsimultaneously rotate the tumblers, and a pawl adapted to release boththe slide and the tumblers after the tumbler-notches have been set inregistry with the free end of such pawl, substantially as shown anddescribed.

3. In a combination-lock, the combination of rotary tumblers, eachprovided with one or more tumbler-notches, each tumbler actuated by arotary graduated dial, a slide carryin g a pivoted pawl, a stationarycam adapted to raise such pawl through the tumblernotches brought intoregistry with the free end of the pawl, a spring adapted to hold thepawl against the cam, a projection from the slide adapted to engage andthrow back the latch-bolt of the lock, projections from the slideadapted to strike against projections from the rotary tumblers so as toirregularly rotate such tumblers, a latch-knob actuating the said slide,and means for changing the relation of the dials and tumblers in respectto the graduations on the dials, substantially as shown and described.

4. In a combination-lock, the combination of rotary tumblers actuated byrotary dials, means whereby the complete unlocking of the lock causessuch rotation of the tumblers as loc to return themtoalocked-positon,interlockdials to be set in various relations'to theing concentric sleeves connecting the rotary notches of the rotarytumblers, substantially tumblers with the rotarydals, and a. series ofpin-holes in the outer flanges of the said sleeves, such pin-holes beingadapted to receive set-pins :fixed in the under faces of the dials so asto permit the gradufttions on the as shown and described.

WILLIAM l-I. S. MOORE. Witnesses:

HENRYLOVE CLARKE, R. S. NORMAN.

